Monkey-wrench.



B. A. THOMAS. MONKEY WRENCH. APPLIGATIOIT FILED JUNE 17, 1913,

7 his abhor/nu Patented 0013,20, 1914.

2 7a. h. A? fi r: iii??? I. J. $ILVEY. BOTH 02 Application filed Fame 17. 193 3.

Be it known their, BRAoF'eRD A. THOMAS,-

:1 citizen of the Viiited States. 1' .iciing at San Freniseo. 1n the county of San From 05500 and State of California. have invented certain new and usefoi Improvements in of Whieh the foiiowing referenceiming had there W no; diwe mg'.

'incipoi object of the invention is to provide the sii ling jaw with, an improved yoke. winch-V the W011? screw by means ich siidnig 321W may be parts as will be hereinafter fully described.

and claimed.

This invention 18 ziiustrateci in the accompanying drawing. Whereui':-

provided with theimproved yoke. z: is view simiizu Fig. 1. witn the yoke shown in section and moved out of engagemeni: with the Worm screw. Fig. epective View the yoke.

The wrench Wiih'WiliCil this improved yoi ie is connected is provicieci "5th ihe usual sim'ni: A? at one eo-fi of whi f there no video the statiooazw jaw 11, and the Hippie site end kick is "provided xiii: the inn- Figuie l is side elevation 01 a wrench die 1:2. The handle ileid n place by the not nd is pro d with in; bearing 1 for? v o suppora, for one end of the worm screw The movable jaw 16 is of the usual *fzype used in monkey Wreneiie's and has. its extension 17 provideti with an opeiiing through 'eh toe Worm screw "passes. This opthrough which the Worm screw 15 passes is not tiweaciod and therefore when the yoke. 13 out of engagement with the Worm screw the movable jaw can 'iiien be quieiziy slid oioog" the shank 10 on one pooitioo to another. The yoke 'lZ-IGTAQ. 01 SAN FR-ANCISCG,

REDTHS T0 \YIILTIQN AUEBEACH AND FOETY-FIVE ONE-HUNDRED QILN FRANCISCO, CALIIORNT'A.

Epeeification of Latoya Fate-iii.

CALIEORNIA, ASSIGNOR OLE EIFTY-FIVE Serial 1%. 7%.152.

1d ions eorr'oefied iv the Hook 20, the inner fave of which has leading: from it the threaded pocket 21. This yoke is provided with inng'es 29 and :23 by means oi which the yoke is siidnoiy conneet fi with the inner 111-1113 2% of die movable jaw M3. 'ihese flanges 92 mi, 2% guide the yoke in its Siiiiinf; movement and prevent, the oke from bevoming detached from the Siit'. voke. it vnii uiso be noted that the images home into engagement WW1 the im .6 ed of the ma portion 1?, and thus form stops to iimii'; the sliding liiovenient oi? the yoiie in one direction. in order to yieida oiy hold the yoke iv its DOi'iilzli position, there is provided a spring; f i'l'ip which has one end seem-ed to the movable jaw by means of the rev-is 53(3 and has its free portion engaging; (he Midge 19 of the yoke, This spriiig i101 nifiiiy holds the yoke in t in Fig. l. but permits the oke t be moved to the posi on shown in Fig. so that the bkiek xiii be moved out of eiigageinent with the worm screw 17 and t me the movabie will be permitted to slide freely upon the worm screw.

In the opera ion of Wrench. the sii iing' first opened. 1:;- mo'sing the yoh'e to the position soov o. in Fig. 2. and {hen o the movable zm' opn the shank i0.

sinw it li'lPiF rmto juice Yer Yong to move the movable 3:1 \iv along the shank 10.

1: siiflwf ie jaw positioned upon i; mid. siidabie jaw provided with w, a yoke eliriuiwle upon said inner mluy-imi to move ti'zmsvei'seiy slmnk, Worm svrew wig-aging go 19 and have their end 1303- position shown said yoke, said Worm screw adapted to move said slidable jaw, a plurality of flanges formd upon said siida-ble yoke and engaging said inner grins of said flanges termi- 5 Hitting at a spaced distance from the rear "portion of said yoke, a flaw, spring fixed t0 the inner and of said slidabie jaw, said 5 ring extending to pass Within said yoke :1? its rear portion, said flanges terminating 10 to allow sufiicient room for the passage/0f said spring whereby said. yeke will bQlIOF- mlly held in engagement with said worm screw but may be moved from. engagement therewith by compressing said flat spring. In. testimony whereof I hereunto affix my signature in pres-sues of two Witnesses.

BRADFORD A. THOMAS. Witnesses:

Ross McMAiioN, Jos. J. MASON. 

